400% is the change from 27 to 135
Calculation steps:
[( 135 - 27 ) ÷ 27] x 100 = 400%
Formula
Percentage change = [(135 - 27) / 27] x 100
Subtract the new number by the original number
135 - 27 = 108
108 ÷ 27 = 4
4 x 100 = 400%
Example